Mark Nunzio Masotto, M.D.
Diagnostic Radiology Physician · Orange, CA
Mark Nunzio Masotto, M.D. is a diagnostic radiology physician with a practice address in Orange, California, and NPI 1033118336, issued on Jul 19, 2005. Check the license (California A61275, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Nunzio Masotto
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A61275 CA
Self-reported in NPPES; status is on the state search - Practice location
- 431 S Batavia St, Orange, CA 92868
- Phone
- (714) 538-6731
- Enumerated
- Jul 19, 2005
- Record last updated
- Aug 15, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (714) 771-8369
- Medicaid ID
- 00A612750 CA
- Medicare enrollment
- Enrolled (PECOS I20040806000945); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 431 S Batavia St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Leticia AndradeBehavior Technician1952291858
- Iliana BeltranBehavior Technician1235028283
- Elizabeth Cambray-Forker, D.O.Diagnostic Radiology Physician1295734838
- June Chen, M.D.Diagnostic Radiology Physician1851384689
- Richard Cho, MDDiagnostic Radiology Physician1376767194
Verify Mark Nunzio Masotto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A61275Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 74.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $5,400.00
4 payments; by number, the most common kind was consulting fee; the largest payer was Canon Medical Systems USA, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Moran Rowen And Dorsey IncOrange, CA
- Riverside Radiology And Interventional Associates IncIrvine, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Nunzio Masotto among 4,500 diagnostic radiology physician records in California
Mark Nunzio Masotto, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1995 · median 2004 among the 3,130 with a school on file
- Record last updated2008 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
122 diagnostic radiology physician records list a practice address in Orange
They are 122 of the 13,245 NPPES records with a practice address in Orange, and 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Orange → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Elizabeth Cambray-Forker, D.O.Orange, CA 928681295734838
- Michael Forino, M.D.Orange, CA 928681891794319
- David Karlin, M.D.Orange, CA 928681477552016
- Paul Kupperstein, D.O.Orange, CA 928681679572218
- Stanley Nakamoto, M.D.Orange, CA 928681285633784
- Kurt Openshaw, M.D.Orange, CA 928681881693174
- Barry Paull, M.D.Orange, CA 928681982603486
- Marshall Rowen, M.D.Orange, CA 928681497754907
Common questions
What is Mark Nunzio Masotto, M.D.'s NPI number?
Mark Nunzio Masotto, M.D.'s National Provider Identifier (NPI) is 1033118336, issued on Jul 19, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Nunzio Masotto, M.D. located?
The NPPES record lists a practice address at 431 S Batavia St, Orange, CA, 92868. Phone: (714) 538-6731. Providers update this record themselves, so call before visiting.
How can I verify Mark Nunzio Masotto, M.D.'s license?
NPPES lists California license number A61275, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Mark Nunzio Masotto, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.